Hi, I'm trying to copy data from an older cluster using 0.89 (CDH3b3) to a new one using 0.91 (CDH3b4) using the CopyTable MR job but it always hangs on "map 0% reduce 0%" until eventually the job is killed by Hadoop for not responding after 600 seconds. I verified that it works fine when copying from one table to another on the same cluster and I verified that the servers in the source cluster have network access to those in the destination cluster.
Any idea what could be causing it? -eran
